Adolph caspar



CASPAR. ick Handle.

(No Model.)

Mill P No. 242,420. Patented May 31,188I.

UNITED STATES I PATENT OFFICE.

ADOLPH UASPAR, OF MASGOUTAH, ILLINOIS.

MILL-PICK HANDLE.

SPECIFICATION forming part of Letters Patent No. 242,420, dated May 31,1881.

Application filed October I, 1880.

To all whom it may concern:

Be it known that I, ADOLPH OASPAR, of Mascoutah, St. Clair count-y,Illinois, have invented a new and Improved M ill-Pick Handle, of whichthe following is a specification.

The object of this invention is to provide a handle adjustable tomill-picks of any taper.

The invention relates to a mill-pick handle having a mortise madethrough its head to receive thepick. One side of the niortiseis madeconcave, and a movable flat-faced convexbacked key is arranged withinthe concavity of the mortise in such amanner that when the pick isintroduced into the mortise the keywill move against the pick and firmlyhold the same within the mortise. The pick is at once released from thehandle by tapping the head of the pick on some objert.

This invention forms a very effective and durable pick-handle, wherebythe pick may be secured'and quickly fastened or detached from thehandle.

Figure l is a perspective view of the handle with a mill-pick inposition. Fig. 2 is an enlarged longitudinal section of the same, andFig. 3 is a longitudinal eleva ion of the same.

Similar letters of reference indicate corre sponding parts.

In the drawings, A represents the handle, having an elongatedrectangular head, A, provided with a mortise or socket, a, extendingfrom side to side through it, which mortise or socket a has adepression, I), in its concave bottom. The bottom of this mortise a iscovered with an iron plate, B, in which is a slot, 0, immediately overthe depression I), and the ends of this plate B are turned down thesides of the head A, and secured thereto by screws d d or other suitabledevice.

Ois the segmental key, held in position with- (No model.)

in the mortise a by means of a screw, f, or other suitable device, thatprojects from the center of the convex face of said key 0 down throughthe slot 0 of the plate B, the depression 1) affording space for thefree movement of said screwf. The upper face of said key 0 is straight,and its ends are preferably slightly blunted, that they may endurelonger.

In case it should be desired to remove the key for the purpose of inerting either a larger or a smaller one, or for the purpose of repairs,it is only necessary to remove the screws d, and then the plate and keycan be removed together.

I) D are bolts passing transversely through the head A, to add to itsstrength.

The k y 0, it will beseen, will slide and ad- I just itself to a pick ofany taper, its movement being limited only by the length of the slot 0in the plate B;

E represents a tapering pick, inserted in the mortise a and keyed fastby the key 0, which is applied to the pick E in such a manner that saidpick E is tightened in place by use.

I am aware that a handle for mill-picks having an opening through itshead and a movable curved wedge placed therein is not new, and this Idisclaim. v

Having thus described my invention, I claim as new and desire to secureby Letters Patent- A mill-pick handle, A, provided with the slot oropening a, the removable metallic plate B, provided with the slot 0, thewedge O, and the headed screw or fastening f, which has its head tocatch back of the slot and move in the

